Syllabus
PRACTICALS (15 hours)
(A minimum of ten experiments to be done from the list given below)
- Determination of Q factor by series resonance
- Determination of Q factor by parallel resonance
- Determination of self-inductance of a coil using Anderson’s Bridge
- Determination of capacitance by measuring impudence of RC circuit
- Determination of Inductance by measuring impudence of RL circuit
- De Sauty’s Bridge.
- Determination of resistivity of a material using low resistance
- Study of decay of current in LR and RC circuit
- Measurement of B by current balance
- To show that the behavior of an inductance in an AC circuit is analogous to that of a resistor which obeys Ohm’s Law and hence to measure inductance.
- High pass filter.
- Low pass filter.
Unit I
Electrostatics: Electrical pressure on a charged surface. The path traced by a charged particle in a transverse electric field. The attracted disc electrometer – construction, theory and applications.
Review of concept of electric field and electric field due to point charge. Electric field due to (i) electric dipole, (ii) line of charge and (iii) charged disc
A dipole in an electric field, torque on a dipole in uniform and non-uniform E fields, potential energy of an electrical dipole.
Unit II
Electric Fields in matter: Capacitance, parallel plate capacitor, calculation of capacity of a spherical and cylindrical capacitor, energy stored in a capacitor, capacitor with dielectric, atomic view of dielectrics, polarization, electric field due to a polarised material, Gauss’s law in dielectrics, Dielectric constant, Energy density of an electrostatic field (with and without dielectric). Polarisability and susceptibility – Frequency dependence of polarisability, Clausius- Mossotti equation.
Unit III
Magneto statics: Review of Ampere’s law, B near a long wire, Magnetic lines of induction, force between two parallel conductors, definition of ampere, B for a solenoid, Biot-savart’s law, and applications of Biot-savart’s law. The magnetic field, Lorentz force and definition of magnetic field, magnetic induction, magnetic force on a current element, circulating charges, Cyclotron resonance frequency, Cyclotron. Magnetisation, magnetization current density, magnetic field intensity, magnetic susceptibility and permeability.
Unit IV
Electromagnetic Induction: Review of Faraday’s law, Faraday’s experiment, Lenz’s law, Time varying magnetic fields, Application in betatron.
Inductance: Self-inductance, LR circuit, energy in a magnetic field, magnetic energy density.
Alternating current and filter: R M S values, Response of LR, CR and LCR circuits to sinusoidal voltages (discussion using the j symbol), Series and parallel resonance, Half-power frequencies, bandwidth and Q-factor, Power in electrical circuits, power factor, Maximum power transfer theorem (with proof).
Unit V
Electromagnetic Theory And Maxwell’s Equations : Displacement current, Setting up of Maxwell’s equations in SI units, Hertz experiment, Travelling electromagneticwave, Wave equations (qualitative and quantitative) – Energy transport and Poynting vector,Poynting theorem. A radiation pressure (Normal and Oblique incidence). Concept of electricdipole, magnetic dipole, expression for energy radiated by a dipole (No derivation)
Objectives and Outcomes
Objective: To enable students to acquire a broad conceptual framework of electromagnetic phenomena.
Course Outcome:
| CO1 |
To demonstrate basic knowledge in electrostatics and electric dipole. |
| CO2 |
Apply the basic principles of electrostatics solve the problems of Dielectric constant and polarizability. |
| CO3 |
Analysis of different laws of magneto statics. |
| CO4 |
Ability to implement basic principles of electromagnetic induction. |
| CO5 |
Explain the basic concepts of alternating current and filters. |
| CO6 |
Ability to do experiments on electricity and magnetism. |
CO – PO mapping
| |
PO1 |
PO2 |
PO3 |
PO4 |
PO5 |
PO6 |
PO7 |
PO8 |
PO9 |
PO10 |
PSO1 |
PSO2 |
PSO3 |
PSO4 |
| CO1 |
3 |
2 |
3 |
3 |
3 |
1 |
2 |
|
|
|
3 |
2 |
3 |
|
| CO2 |
3 |
2 |
3 |
3 |
3 |
1 |
2 |
|
|
|
3 |
2 |
3 |
|
| CO3 |
3 |
2 |
3 |
3 |
3 |
1 |
2 |
|
|
|
3 |
2 |
3 |
|
| CO4 |
3 |
2 |
3 |
3 |
3 |
1 |
2 |
|
|
|
3 |
2 |
3 |
|
| CO5 |
3 |
2 |
3 |
3 |
3 |
1 |
2 |
|
|
|
3 |
2 |
3 |
|
| CO6 |
3 |
2 |
3 |
3 |
3 |
2 |
3 |
|
|
|
2 |
3 |
3 |
|
